Arkolith/Funds/Index Fund Advisors, Inc.

Index Fund Advisors, Inc.

CIK 1665097
Holdings as of Mar 31, 2026·disclosed May 12, 2026·~42-day 13F lag·13F-HR
Active Filer

Index Fund Advisors, Inc. holds a concentrated book of 127 stocks worth $2.2B as of Q1 2026 (disclosed May 12, 2026, a ~45-day 13F lag). This quarter they opened Glacier Bancorp Inc and trimmed Dimensional US Target Value. Their largest long position is Dimensional US Small Cap ETF at 19% of the equity book.

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holdings, largest changes, and filing provenance.
Opened
15
new positions
Added to
74
existing
Trimmed
29
reduced
Sold out
34
exited

Concentration

Top-heavy: concentrated book

Top 5 holdings
74%
Top 10 holdings
85%
Top 20 holdings
92%

Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.

Direct sector allocation

3% mapped to company sectors

ETF / fund or unclassified
97%
Information Technology
1%
Consumer Discretionary
1%
Financials
1%
Health Care
0%
Industrials
0%
Consumer Staples
0%
Energy
0%

Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.

Biggest moves: latest quarter

Estimated $ traded · quarter-end prices, no cost basis

Bought
Trimmed / exited

Holdings: largest first

Bars show each stock's share of the portfolio. Click a row for its position history.

127 positions
#SecurityValueShares% PortLast moveHistory
1Dimensional ETF Trust
US SMALL CAP ETF
$419.7M5.90M
18.9%
+1.0%
Added · +56K sh
2Dimensional ETF Trust
US TARGETED VLU
$398.7M6.38M
17.9%
−0.9%
Reduced · −59K sh
3Dimensional ETF Trust
US EQUITY MARKET
$351.2M4.95M
15.8%
~0%
Reduced · −507 sh
4Dimensional ETF Trust
US MKTWIDE VALUE
$278.1M5.74M
12.5%
+0.1%
Added · +5K sh
5Dimensional ETF Trust
INTERNATNAL VAL
$187.4M3.55M
8.4%
−0.6%
Reduced · −21K sh
6Dimensional ETF Trust
US SMALL CAP VAL
$96.8M2.76M
4.4%
+8.0%
Added · +205K sh
7Dimensional ETF Trust
US LARGE CAP VAL
$48.9M1.37M
2.2%
+13%
Added · +163K sh
8Ishares TR
0-3 MNTH TREASRY
$39.2M389.8K
1.8%
+2.3%
Added · +9K sh
9Vanguard BD Index FDS
TOTAL BND MRKT
$35.1M477.2K
1.6%
−1.1%
Reduced · −6K sh
10Dimensional ETF Trust
INTL SMALL CAP V
$24.7M625.1K
1.1%
+7.2%
Added · +42K sh
11Dimensional ETF Trust
GLOBAL REAL EST
$23.4M881.7K
1.1%
+2.9%
Added · +25K sh
12Dimensional ETF Trust
INTL SMALL CAP E
$22.8M676.9K
1.0%
+6.3%
Added · +40K sh
13Dimensional ETF Trust
US CORE EQUITY 2
$22.0M567.1K
1.0%
+144%
Added · +335K sh
14Dimensional ETF Trust
EMGR CRE EQT MNG
$19.2M567.1K
0.9%
+5.5%
Added · +29K sh
15Dimensional ETF Trust
EMERGING MKTS VA
$17.5M488.3K
0.8%
+11%
Added · +48K sh
16Vanguard Star FDS
VG TL INTL STK F
$17.4M225.6K
0.8%
+0.1%
Added · +235 sh
17Vanguard Index FDS
TOTAL STK MKT
$15.2M47.4K
0.7%
−0.4%
Reduced · −177 sh
18Costco Wholesale Corporation
COM
$11.1M11.2K
0.5%
+0.5%
Added · +55 sh
19Glacier Bancorp Inc New
COM
$9.5M213.6K
0.4%
New
New position
20Dimensional ETF Trust
US HIGH PROFITAB
$9.0M244.8K
0.4%
+107%
Added · +127K sh
21American Centy ETF TR
AVANTIS EMERGING
$8.7M136.7K
0.4%
+27%
Added · +29K sh
22Ishares TR
CORE S&P500 ETF
$8.1M12.3K
0.4%
+0.3%
Added · +38 sh
23American Centy ETF TR
AVANTIS ALL EQT
$7.6M86.7K
0.3%
+14%
Added · +11K sh
24Johnson & Johnson
COM
$6.6M26.8K
0.3%
−14%
Reduced · −4K sh
25Nvidia Corporation
COM
$6.4M36.9K
0.3%
~0%
Added · +18 sh
26Dimensional ETF Trust
ULTRASHORT FIXED
$5.8M115.3K
0.3%
+14%
Added · +14K sh
27Dimensional ETF Trust
SHORT DURATION F
$5.6M116.1K
0.3%
+77%
Added · +50K sh
28Apple Inc
COM
$5.5M21.7K
0.2%
−0.5%
Reduced · −116 sh
29Vanguard Index FDS
SMALL CP ETF
$5.5M20.9K
0.2%
+0.3%
Added · +64 sh
30Vaneck ETF Trust
GOLD MINERS ETF
$5.4M58.6K
0.2%
−24%
Reduced · −19K sh
31Amazon Com Inc
COM
$5.2M24.9K
0.2%
−15%
Reduced · −4K sh
32Dimensional ETF Trust
INTL CORE EQUITY
$4.9M139.2K
0.2%
+259%
Added · +100K sh
33Vanguard World FD
INF TECH ETF
$4.6M6.5K
0.2%
+0.5%
Added · +31 sh
34Microsoft Corp
COM
$3.9M10.6K
0.2%
+17%
Added · +2K sh
35American Centy ETF TR
INTL SMCP VLU
$3.7M37.4K
0.2%
+0.4%
Added · +158 sh
36Vanguard Index FDS
SM CP VAL ETF
$3.7M17.1K
0.2%
+0.7%
Added · +115 sh
37Dimensional ETF Trust
CORE FIXED INCOM
$3.5M82.5K
0.2%
+126%
Added · +46K sh
38Dimensional ETF Trust
GLOBAL CR ETF
$3.3M61.5K
0.1%
+146%
Added · +37K sh
39Dimensional ETF Trust
DIMENSIONAL INTE
$3.2M60.7K
0.1%
+136%
Added · +35K sh
40Vanguard Scottsdale FDS
SHORT TERM TREAS
$3.1M52.3K
0.1%
+94%
Added · +25K sh
41Amphenol Corp
CL A
$2.7M21.3K
0.1%
+0.4%
Added · +93 sh
42American Centy ETF TR
AVANTIS CORE FI
$2.7M64.4K
0.1%
+4.6%
Added · +3K sh
43Vanguard Index FDS
S&P 500 ETF SHS
$2.6M4.4K
0.1%
+11%
Added · +430 sh
44Vanguard Index FDS
REAL ESTATE ETF
$2.6M29.6K
0.1%
+3.5%
Added · +1K sh
45Meta Platforms Inc
CL A
$2.6M4.5K
0.1%
−28%
Reduced · −2K sh
46Vanguard Index FDS
MID CAP ETF
$2.4M8.3K
0.1%
+0.3%
Added · +26 sh
47Vanguard Index FDS
MCAP VL IDXVIP
$2.1M11.4K
0.1%
+0.6%
Added · +67 sh
48Dimensional ETF Trust
INTL HIGH PROFIT
$2.1M65.3K
0.1%
+143%
Added · +38K sh
49Alphabet Inc
CAP STK CL A
$1.9M6.6K
0.1%
+32%
Added · +2K sh
50Tesla Inc
COM
$1.8M4.8K
0.1%
+54%
Added · +2K sh
Showing 50 of 127 positions

Filing history

As-of date vs the date the SEC received each filing

QuarterAs ofFiledPositionsValueForm
Q1 2026Mar 31, 2026May 12, 2026127$2.2B13F-HR
Q4 2025Dec 31, 2025Jan 29, 2026146$2.1B13F-HR
Q3 2025Sep 30, 2025Oct 22, 2025145$2.1B13F-HR
Q2 2025Jun 30, 2025Jul 25, 2025144$1.8B13F-HR
Q1 2025Mar 31, 2025Apr 30, 202595$1.6B13F-HR
Q4 2024Dec 31, 2024Jan 29, 2025106$1.9B13F-HR
Q3 2024Sep 30, 2024Oct 22, 2024108$1.9B13F-HR
Q2 2024Jun 30, 2024Aug 2, 202496$1.8B13F-HR
Q1 2024Mar 31, 2024May 13, 202496$1.8B13F-HR
Q4 2023Dec 31, 2023Feb 14, 202490$1.7B13F-HR
Q3 2023Sep 30, 2023Oct 20, 202397$1.5B13F-HR
Q2 2023Jun 30, 2023Aug 10, 202384$1.5B13F-HR
Q1 2023Mar 31, 2023Apr 21, 202388$1.5B13F-HR
Q4 2022Dec 31, 2022Jan 23, 202379$1.4B13F-HR
Q3 2022Sep 30, 2022Oct 27, 202288$1.3B13F-HR
Q2 2022Jun 30, 2022Jul 27, 202290$1.3B13F-HR
Q1 2022Mar 31, 2022May 6, 202296$1.3B13F-HR/A
Q4 2021Dec 31, 2021Jan 26, 202298$1.4B13F-HR
Amended / restated
  • Q1 2022 · filed Apr 25, 202213F-HR · superseded

Data source

Holdings from SEC EDGAR 13F-HR filings, updated quarterly ~45 days after quarter-end. Public domain. The book and weighting are long equity only; disclosed put/call options are listed separately and excluded from those totals. Price-derived performance is withheld until the price-source policy and freshness gate are green.